package com.example.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.example.reggie.common.R;
import com.example.reggie.entity.Employee;
import com.example.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

@Slf4j
@RestController
@RequestMapping("employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     *员工登录
     * @param httpServletRequest
     * @param employee
     * @return emp
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest httpServletRequest, @RequestBody Employee employee) {

        //1.将页面提交的密码进行md5加密
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据用户名查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3.没有查询到则返回失败结果
        if (emp == null) {
            return R.error("用户名不存在或不正确");
        }

        //4.比对密码是否正确
        if (!emp.getPassword().equals(password)) {
            return R.error("密码错误");
        }

        //5.查看员工状态是否可用
        if (emp.getStatus() == 0) {
            return R.error("账号已被禁用");
        }

        //6.登录成功，将员工id存入Session并返回结果
        httpServletRequest.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param httpServletRequest
     * @return R
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest httpServletRequest) {
        //清理Session中的员工信息
        httpServletRequest.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 添加新员工
     * @param employee
     * @return R
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        //赋予初始密码，并且加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //创建时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        //获取当前登录用户的ID
//        long empId = (long) request.getSession().getAttribute("employee");
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        //存入数据库
        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> pageR(int page, int pageSize, String name) {
        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();

        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);

        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);
    }

    /**
     * 编辑员工信息
     * @param employee
     * @param request
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee) {
        long empId = (long) request.getSession().getAttribute("employee");
//        employee.setUpdateUser(empId);
//        employee.setUpdateTime(LocalDateTime.now());
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**\
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        Employee employee = employeeService.getById(id);
        if (employee != null)
            return R.success(employee);
        return R.error("未查询到员工信息");
    }
}
